GitHub-Mirror/u-boot
2
0
Fork 0
mirror of https://github.com/Fishwaldo/u-boot.git synced 2025-03-20 22:21:41 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Remove bit swapping in Xilinx Spartan bitfile loading

Browse source 
This patch removes the unnecessary bit swapping when
booting .bit files with the 'fpga loadb' command.

Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
This commit is contained in:
Matthias Fuchs 2007-12-27 17:13:11 +01:00 • committed by Wolfgang Denk
parent 437fc7327f
commit c26acc1a43
1 changed files with 1 additions and 36 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

37
common/cmd_fpga.c
View file

@ -60,12 +60,9 @@ int fpga_loadbitstream(unsigned long dev, char* fpgadata, size_t size)
{ {
#if defined(CONFIG_FPGA_XILINX) #if defined(CONFIG_FPGA_XILINX)
unsigned int length; unsigned int length;
unsigned char* swapdata;
unsigned int swapsize; unsigned int swapsize;
char buffer[80]; char buffer[80];
unsigned char *ptr;
unsigned char *dataptr; unsigned char *dataptr;
unsigned char data;
unsigned int i; unsigned int i;
int rc; int rc;
@ -143,39 +140,7 @@ int fpga_loadbitstream(unsigned long dev, char* fpgadata, size_t size)
dataptr+=4; dataptr+=4;
printf(" bytes in bitstream = %d\n", swapsize); printf(" bytes in bitstream = %d\n", swapsize);
/* check consistency of length obtained */ rc = fpga_load(dev, dataptr, swapsize);
if (swapsize >= size) {
printf("%s: Could not find right length of data in bitstream\n",
__FUNCTION__);
return FPGA_FAIL;
}
/* allocate memory */
swapdata = (unsigned char *)malloc(swapsize);
if (swapdata == NULL) {
printf("%s: Could not allocate %d bytes memory !\n",
__FUNCTION__, swapsize);
return FPGA_FAIL;
}
/* read data into memory and swap bits */
ptr = swapdata;
for (i = 0; i < swapsize; i++) {
data = 0x00;
data |= (*dataptr & 0x01) << 7;
data |= (*dataptr & 0x02) << 5;
data |= (*dataptr & 0x04) << 3;
data |= (*dataptr & 0x08) << 1;
data |= (*dataptr & 0x10) >> 1;
data |= (*dataptr & 0x20) >> 3;
data |= (*dataptr & 0x40) >> 5;
data |= (*dataptr & 0x80) >> 7;
*ptr++ = data;
dataptr++;
}
rc = fpga_load(dev, swapdata, swapsize);
free(swapdata);
return rc; return rc;
#else #else
printf("Bitstream support only for Xilinx devices\n"); printf("Bitstream support only for Xilinx devices\n");